12271380 has 48 divisors (see below), whose sum is σ = 37485504. Its totient is φ = 2974720.

The previous prime is 12271349. The next prime is 12271403. The reversal of 12271380 is 8317221.

It is a self number, because there is not a number n which added to its sum of digits gives 12271380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8637 + ... + 9956.

It is an arithmetic number, because the mean of its divisors is an integer number (780948).

Almost surely, 2^12271380 is an apocalyptic number.

12271380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12271380 is an abundant number, since it is smaller than the sum of its proper divisors (25214124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12271380 is a wasteful number, since it uses less digits than its factorization.

12271380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18616 (or 18614 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12271380 is about 3503.0529542101. The cubic root of 12271380 is about 230.6558470354.

The spelling of 12271380 in words is "twelve million, two hundred seventy-one thousand, three hundred eighty".